function MultiDataSet ( name )
{
	var ds_list = {};

	this.name = name;

	this.add = function ( name )
	{
		var _nm = this._resolve_name ( name );
		var ds = new DataSet ( _nm );

		ds_list [ name ] = ds;

		return ds;
	};

	this.get = function ( name )
	{
		return ds_list [ name ];
	};


	this._resolve_name = function ( name )
	{
		return this.name + ":" + name;
	};
}
